Synchronize with google/gcc-4_9 to r224707 (from r214835)

Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d

3 files changed, 86 insertions, 3 deletions

diff --git a/gcc-4.9/gcc/testsuite/lib/asan-dg.exp b/gcc-4.9/gcc/testsuite/lib/asan-dg.exp
index f4ec44577..04bf3bf23 100644
--- a/gcc-4.9/gcc/testsuite/lib/asan-dg.exp
+++ b/gcc-4.9/gcc/testsuite/lib/asan-dg.exp
@@ -23,6 +23,21 @@ proc check_effective_target_faddress_sanitizer {} {
     } "-fsanitize=address"]
 }
 
+proc asan_include_flags {} {
+    global srcdir
+    global TESTING_IN_BUILD_TREE
+
+    set flags ""
+
+    if { [is_remote host] || ! [info exists TESTING_IN_BUILD_TREE] } {
+      return "${flags}"
+    }
+
+    set flags "-I$srcdir/../../libsanitizer/include"
+
+    return "$flags"
+}
+
 #
 # asan_link_flags -- compute library path and flags to find libasan.
 # (originally from g++.exp)
@@ -80,17 +95,19 @@ proc asan_init { args } {
 	}
     }
 
+    set include_flags "[asan_include_flags]"
+
     if [info exists TEST_ALWAYS_FLAGS] {
 	set asan_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
     }
     if [info exists ALWAYS_CXXFLAGS] {
 	set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
-	set ALWAYS_CXXFLAGS [concat "{additional_flags=-fsanitize=address -static-libasan -g}" $ALWAYS_CXXFLAGS]
+	set ALWAYS_CXXFLAGS [concat "{additional_flags=-fsanitize=address -static-libasan -g $include_flags}" $ALWAYS_CXXFLAGS]
     } else {
 	if [info exists TEST_ALWAYS_FLAGS] {
-	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=address  -static-libasan -g $TEST_ALWAYS_FLAGS"
+	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=address  -static-libasan -g $include_flags $TEST_ALWAYS_FLAGS"
 	} else {
-	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=address -static-libasan -g"
+	    set TEST_ALWAYS_FLAGS "$link_flags -fsanitize=address -static-libasan -g $include_flags"
 	}
     }
     if { $link_flags != "" } {
diff --git a/gcc-4.9/gcc/testsuite/lib/profopt.exp b/gcc-4.9/gcc/testsuite/lib/profopt.exp
index a6e4d8903..6210aedc6 100644
--- a/gcc-4.9/gcc/testsuite/lib/profopt.exp
+++ b/gcc-4.9/gcc/testsuite/lib/profopt.exp
@@ -169,6 +169,8 @@ proc profopt-final-code { which final_code name } {
 # SRC is the full pathname of the testcase.
 #
 proc profopt-get-options { src } {
+    global srcdir
+
     # dg-options sets a variable called dg-extra-tool-flags.
     set dg-extra-tool-flags ""
 
diff --git a/gcc-4.9/gcc/testsuite/lib/target-supports.exp b/gcc-4.9/gcc/testsuite/lib/target-supports.exp
index 36a0b6c1b..8995fb0b3 100644
--- a/gcc-4.9/gcc/testsuite/lib/target-supports.exp
+++ b/gcc-4.9/gcc/testsuite/lib/target-supports.exp
@@ -869,6 +869,19 @@ proc check_effective_target_fpic { } {
     return 0
 }
 
+# Return 1 if -shared is supported, as in no warnings or errors
+# emitted, 0 otherwise.
+
+proc check_effective_target_shared { } {
+    # Note that M68K has a multilib that supports -fpic but not
+    # -fPIC, so we need to check both.  We test with a program that
+    # requires GOT references.
+    return [check_no_compiler_messages shared executable {
+	extern int foo (void); extern int bar;
+	int baz (void) { return foo () + bar; }
+    } "-shared -fpic"]
+}
+
 # Return 1 if -pie, -fpie and -fPIE are supported, 0 otherwise.
 
 proc check_effective_target_pie { } {
@@ -5993,3 +6006,54 @@ proc force_conventional_output_for { test } {
     }
 }
 
+# Return 1 if the x86-64 target supports PIE with copy reloc, 0
+# otherwise.  Cache the result.
+
+proc check_effective_target_pie_copyreloc { } {
+    global pie_copyreloc_available_saved
+    global tool
+    global GCC_UNDER_TEST
+
+    if { !([istarget x86_64-*-*] || [istarget i?86-*-*]) } {
+	return 0
+    }
+
+    # Need auto-host.h to check linker support.
+    if { ![file exists ../../auto-host.h ] } {
+	return 0
+    }
+
+    if [info exists pie_copyreloc_available_saved] {
+	verbose "check_effective_target_pie_copyreloc returning saved $pie_copyreloc_available_saved" 2
+    } else {
+	# Set up and compile to see if linker supports PIE with copy
+	# reloc.  Include the current process ID in the file names to
+	# prevent conflicts with invocations for multiple testsuites.
+
+	set src pie[pid].c
+	set obj pie[pid].o
+
+	set f [open $src "w"]
+	puts $f "#include \"../../auto-host.h\""
+	puts $f "#if HAVE_LD_PIE_COPYRELOC == 0"
+	puts $f "# error Linker does not support PIE with copy reloc."
+	puts $f "#endif"
+	close $f
+
+	verbose "check_effective_target_pie_copyreloc compiling testfile $src" 2
+	set lines [${tool}_target_compile $src $obj object ""]
+
+	file delete $src
+	file delete $obj
+
+	if [string match "" $lines] then {
+	    verbose "check_effective_target_pie_copyreloc testfile compilation passed" 2
+	    set pie_copyreloc_available_saved 1
+	} else {
+	    verbose "check_effective_target_pie_copyreloc testfile compilation failed" 2
+	    set pie_copyreloc_available_saved 0
+	}
+    }
+
+    return $pie_copyreloc_available_saved
+}